应用传统的有限元方法分析电场问题,虽能较好地计算出场域内节点的电位分布,但对单元电位函数直接求数值微分则大大降低了电场计算精度,且在连续介质区域内,场是多值的,是违背客观规律的。本工作提出的边界电场约束方程和电磁场计算的互补 The traditional finite element method is used to analyze the electric field problem. Although the potential distribution of the nodes in the field can be well calculated, the calculation of the electric field can be greatly reduced by directly differentiating the element potential function. In the continuous medium region, the field is more Value, is contrary to objective laws. This work proposed the boundary electric field constraint equation and the electromagnetic field calculation complementarity